Cruz should keep going unless such a moment is reached when Trump cannot mathematically be stopped on the first ballot.
Basically, this.
I never like the idea of forcing candidates out. I mean, if Trump is already winning, why should Cruz and Kasich drop out? Won't he just continue onto his coronation? What are you afraid of?
And no, Cruz is not mathematically eliminated from winning. He is eliminated from winning *before* the convention, but not *at* the convention. Just as I scoffed at the Cruz shills who thought Kasich MUST drop out when he couldn't hit 1237, I scoff now at the Trump shills who think Cruz MUST drop out. I mean, yes, they can't hit 1237, but it's not at all a guarantee Trump will, either. If he doesn't, do they not have a nominee? Of course not. They settle it at the convention.
At that convention, if Trump is closest to 1237, he will have a YUGE advantage. But if Trump proves to be too incompetent at winning delegates at state conventions and Cruz wins, Cruz should be the winner. I mean, if Trump has such a piss-poor campaign he can't translate the most votes into the most delegates, why on earth do you want him taking on the Clinton machine in November?